DSP Based Control of Interleaved Boost Converter

C. Sudhakarababu; Mummadi Veerachary

DSP Based Control of Interleaved Boost Converter

C. Sudhakarababu

Mummadi Veerachary

Vol. 5, No. 3, pp. 180-189, Jul. 2005

10.6113/JPE.2005.5.3.180

Digital control

Interleaved boost converter

Invariance condition

Ripple cancellation

Sliding-mode control

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Abstract

In this paper a DSP based control scheme for the interleaved boost converter is presented. The mathematical model for the interleaved boost converter operating in a continuous inductor current mode is developed. A state-space averaging technique is used for modeling the converter system. A fixed frequency sliding mode controller is designed to ensure current distribution between the two converter modules and to achieve the load voltage regulation simultaneously. Necessary and sufficient conditions, using variable structure theory, are derived for the sliding mode to exist. The range of sliding mode controller coefficients is also determined. The designed controller capability, load distribution among the individual boost cells and load voltage regulation against source and load disturbances, are demonstrated through PSIM simulation results. A real-time controller based on ADMC401 DSP is developed. Experimental results are provided to validate the proposed control scheme.

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Cite this article

[IEEE Style]

C. Sudhakarababu and M. Veerachary, "DSP Based Control of Interleaved Boost Converter," Journal of Power Electronics, vol. 5, no. 3, pp. 180-189, 2005. DOI: 10.6113/JPE.2005.5.3.180.

[ACM Style]

C. Sudhakarababu and Mummadi Veerachary. 2005. DSP Based Control of Interleaved Boost Converter. Journal of Power Electronics, 5, 3, (2005), 180-189. DOI: 10.6113/JPE.2005.5.3.180.